CIPTA, H.; WIDYASARI, R. .; BATUBARA, F. H. Graph Coloring Implementation Using Welch Powell Algorithm In Lecture Scheduling Design For Mathmatics Department. Mathline : Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 8, n. 4, p. 1383–1398, 2023. DOI: 10.31943/mathline.v8i4.537. Disponível em: https://mathline.unwir.ac.id/index.php/Mathline/article/view/537. Acesso em: 10 mar. 2025.